Hollow cylindrical valve



13, 1932. E. G. REED 1,877,589

HOLLOWIOYLINDRIGAL VALVE Filed March 5, 1950 I Inoenf'n- Patented Sept.13, 1932 UNITE EDWARD GRANVILLE REED, OF GAMAS, WASHINGTON HOLLOWcYLInnnIcA vALvE Application filed March 3,

invention relates to valves for controlling the flow of heavily ladenliquids in a pipe line, such as pulp stock in a paper mill.

The valves heretofore used for this pur- 5 pose have been inadequate, inthat the stock tends to accumulate on the-valve seat and prevent thevalve member from seating closely thereon, so that the valve can not becompletely closed and will leak.

Further, in controlling the flow of the heavy'stock in the pipe line, itis desirable that a rapid acting valve be used in order that the flowmay be shut ofi substantially at a. given instant, otherwise, as whenthe valve 15 is used for filling the beater tub with stock,

the valve, if not closed at the moment the tub is filled, will cause thelatter to overflow. One of the objects of my invention is to provide asimple, rapid acting valve which, is especially adapted for controllingthe flow of heavy stock, and which is so constructed as to automaticallyclear the stock which may have accumulated on the valve seat as it isclosed, whereby a fluid tight closure will be '25 made under allcircumstances, and hence the valve will not leak.

Another object of my invention is to provide such a valve adapted to besecurely and instantly locked in any position in which it may be placed,and the providing of efiicient means for this purpose is one of theimportant and essential features of my invention.

Further, the above mentioned features render my valve adapted for readyinspection and repair while in use, so that when such repair orinspection is necessary, the pipe line will not have to betaken out ofservice, though the valve is under pressure.

I attain these objects in a valve consisting of, a reciprocable valvemember provided with a projecting stem, an operating lever pivoted tosaid stem, a link pivoted at one end to the adjacent end of the valvecasing 5 and pivoted at its opposite end to the extremity of saidoperating lever, and means for securing the operating lever in anyposition to which moved.

The above mentioned and incidental fea- QO; tures, also the operation ofmy valve are here- 1930. Serial No. 432,809.

inafter fully described with reference to the accompanying-drawing.

In the drawingz'v V Fig. 1 shows a side elevation of my improved valveillustrating the valve in the closed position;

Fig. 2 shows an enlarged centrallongitudinal section taken on the line22 of Fig. 3;

Fig.3 shows a reduced section taken .on'the line 33 of Fig. 2;

Fig. 4 shows a section taken on the line of Fig. 1 and illustrates thedetachable stem and connection therefor of my valve; and

Figs. 5 and 6 show in central longitudinal sections how my valve may beadapted for angular connections without substantial change. 1 Q

Referring now to Figs. 1-130 4; my valve consists of a cylindricalvalvehousing a 'open at each end and provided with opposite alined ports6, 0. One'endof the housing is closed by aplate d and on the other endis closed by a stufling bozi 6, through which the valve stem f,hereinafter described, extends.

A circumferential valve seat 9 is provided adjacent the interior lowerend of the housing and a hollow cylindrical Valve h is reciproe cablyseated withinthe bore of the housing'a, one end of which'is adapted whenclosed to rest closely on the said valve seat 9. The ends of the valve hare provided with interior beveled surfaces 70 I forming cutting edges,whereby as the valve is reciprocated inthe housing, the walls'will bescraped clean'of any stock which may cling thereto and the lower cuttingedge will dlslodge any stock which may have collectedon the valve seat 9and thus permit the valve h to always rest closely on its seat and hencewill not leak when'closed. I i V H The valve h is provided withinterior'radial arms integral with which is a central block m,.providedwith a longitudinal recess n and a central entrance slot 0. The interiorwall ofthe valve h is preferably taperedlongitudinallytowards its endsfrom the center, and the webs of the arms 7 are flared longitudi nallyofthe valve for strength.

The valve stem f, is provided with a head ter than the stem, and isadapted tobe inserted laterally in the recess 7 of the block m of thevalve thereby to place 9 in the slot 0 rendering the valve stemconveniently and easily detachable while in service, if necessary bymerely removing the stuffing box 6 when the valve is closed.

The projecting end of the valve stem f is provided with a forked member2 to which is pivoted the operating handle 3 by a bolt 4. The handle 3is provided with an extension 5 pivoted to a supporting arm 6, pivoted011 the valve housing as at a. The handle 3 is provided with an 011' setportion 36 provided with an arcuate slot 3a adjacent the bolt 4, throughwhich slot a bolt 7 is inserted and secured in the forked member 2. Aclamping lever 8 is threaded 0n the bolt 7, by means of which the valveIt may be instantly locked inany desired position as may be required,and the closing of the valve assumed without manuallyholding the valvein closed position.

It will be evident that the pressure of the material flowing through myvalve in the direct-ionof the arrows in Figs. 2 and 4 will tend to holdthe valveh firmly in its seat 9 without however imposing, in so doing,any appreciable resistance to the opening or closing of the valve bymeans of the handle 3. The valve it cannot become clogged because beinghollow, it permits the heavy stock to pass upwardly through it when itis closed and does not trap and press the stock onthe valve seat againstthe adjacent wall of the valve housing.

In case of wear of the'valve tending to cause it to leak, all requiredto be done would be to rim out the interior of the valve housing, removethe old valve from the stem and substitute a valve of greater crosssection in its place. To this end I make my valve detachable from itsstem so that the valve can be removed without dismantling the valveoperating mechanism or 'in case there is a break in the valve stem, thevalve need not beremoved but a new valve stem may be substituted in theplace of the one broken.

. Referring now to Figs. 5 and 6: I have illustrated my valve adaptedfor angular po sition in the pipe line, by merely removing the plate (Z,shown in Figs. 1, 5, and 6, from the lower end of the valve and securingit to either the port 10 or 12 as may be desirable, so that the open end13 then becomes the outlet port and the stock will then flow as shown bythe arrows. In this form the inspection and repair of the valve 14 andstem 15 is also permitted when closed but while there is still pressurein the pipe line.

Obviously, to change my valve from an upright to a horizontal position,it will only bev necessary to make the requisite changes in positionofthe plated, as illustrated in Fig. 6, since my valve will operate withequal efiiciency in any position.

I claim:

1. In a valve, a reciprocable valve member provided with a projectingstem, an operating lever pivoted to said stem, a link pivoted at one endto the adjacent end of the valve casing and pivoted at its opposite endto the extremity of said operating lever, said lever provided with anoffset portion adj acent its pivotal connection with the valve stem,said offset portion provided with an arcuate slot, a bolt carried by thevalve stem extending through said slot, and a clamping leverthreaded onsaid bolt for locking the operating lever in any position to whichmoved.

2. In a gate valve the combination of, a hollow cylindrical body closedat its ends and provided in its sides with oppositely located alinedports, a hollow cylindrical slide valve reciprocable in said bodyseating at one end of the latter to close said ports, the valve providedwith interior arms, a stem connected to said arms and projecting thruthe head of the valve body, an operating lever pivotally mounted on saidprojecting stem end, a link pivotally connecting the extremity of saidlever with the valve body, the said lever being angular, whereby thevalve is firmly held on its seat when closed and means for clamping saidlever in place on the valve stem. 7

EDWARD GRANVILLE REED.

